A Christmas card to Harold Preece dated 22nd of December 1927. It’s signed with an X-triple bar. 

Source:

Lee Breakiron. This was used as a cover for The REH Foundation Newsletter Volume 14, Number 4, picture provided by Lou Ann Lord. Glenn Lord owned all but the postcard to Leonore (which Patrice Louinet owns), and they’re now in the UT Harry Ransom Library with the rest of his collection.